Display device or portion thereof with graphical user interface



FIG. 1 is a front view of a display device or portion thereof withgraphical user interface according to our new design; and,

FIG. 2 is an enlarged view thereof, but shown without the broken linesfor clarity of illustration.

The portions of the user interface shown in broken lines and the brokenouter rectangle showing a portion of a display device is included toshow environmental structure and form no part of the claimed design.

CLAIM We claim the ornamental design for a display device or portionthereof with graphical user interface, as shown and described.